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Introduction to ten physical properties of stainless steel elbows

May. 12, 2025

The ten physical properties of stainless steel elbows are as follows:

1. Thermal diffusivity is a property that determines the rate of temperature migration inside a substance. It is the ratio of thermal conductivity to the product of heat and density. The unit of thermal diffusivity is Btu/(h·ft·0F) or w/(m·k).

2. Thermal expansion coefficient, the change in the mass element of a substance caused by temperature change. The expansion coefficient is the slope of the expansion-temperature curve, the instantaneous expansion coefficient is the slope at a specific temperature, and the average slope between two specified temperatures is the average thermal expansion coefficient. The expansion coefficient can be expressed in volume or length, usually in length.

3. Density, the density of a substance is the mass per unit volume of the substance, and the unit is kg/m3 or 1b/in3.

4. Elastic modulus, when the force applied to the two ends of a unit length edge can cause a unit change in the length of the object, the force required per unit area is called the elastic modulus, and the unit is 1b/in3 or N/m3.

5. Resistivity, the resistance measured between the two opposite sides of a cubic material per unit length, expressed in Ω·m, μΩ·cm or (obsolete) Ω/(circular mil.ft).

6. Magnetic permeability, a dimensionless coefficient that indicates the degree to which a substance is easily magnetized, is the ratio of magnetic induction intensity to magnetic field intensity.

7. Melting temperature range, determines the temperature at which an alloy begins to solidify and completes solidification.

8. Specific heat, the amount of heat required to change the temperature of a unit mass of a substance by 1 degree. The values of specific heat are the same in the British and CGS systems because the unit of heat (Biu or cal) depends on the amount of heat required to raise the temperature of a unit mass of water by 1 degree. The values of specific heat are different from the British or CGS systems because the unit of energy (J) is defined differently. The units of specific heat are Btu (1b·0F) and J/(kg·k).

9. Thermal conductivity, a measure of the rate at which a substance conducts heat. When a temperature gradient of 1 degree per unit length is established on a material per unit cross-sectional area, thermal conductivity is defined as the amount of heat conducted per unit time. The unit of thermal conductivity is Btu/(h·ft·0F) or w/(m·K).

10. Thermal diffusivity is a property that determines the rate of temperature migration inside a material. It is the ratio of thermal conductivity to the product of heat and density. The unit of thermal diffusivity is expressed in Btu/(h·ft·0F) or w/(m·k).

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